Molding-machine.



No. 798,897. PATENTED SEPT. 5, 1905. S. GRIFFITH. MOLDING MACHINE.

APPLICATION PIL-ED NOV. 1B, 1904.

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PATBNTED SEPT. 5, 1905.

S. GRIFFITH.

MOLDING MACHINE.

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PATENTED SEPT. 5, 1905.

No. 798,897.A

S. GRIFFITH.

MOLDING MACHINE.

APPLmATloN rum Nov.1s, 1904.

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UNITED STATES PATENT OFFICE.

Momma-MACHINE.

Specicaton of Letters Patent.

Patented Sept. 5, 1905.

Application filed November 18, 1904. Serial No. 233,372.

To H//Z who/1t it NM1/y concern:

Be it known that I, STANTON GRIFFITH, a citizen of the United States of America, residing at Beloit, in the county of Rock and Stateof 'isconsin, have invented certain new and useful Improvements in hIolding-h/Iaehines, of which the following is a specification.

This invention relates to a molding-machine. Vlts object is to provide a machine of that class which shall be of simple and comparatively inexpensive construction and withal highly efficient in operation; and it consists in the features of construction and combinations of parts hereinafter fully set forth and of the novel features thereof specifically pointedout in the claims appended to this specification.

Referring to the accompanying drawings, which form a part of this specification, Figure l is a top plan View of a machine embodying' my invention with the drag removed therefrom. Fig. Q is a like view of the same with the drag and core-box removed therefrom and their supporting-standards sectioned away. Fig. 2u is a section at the dotted line 2 2 in Fig. 2 of parts there shown. Fig. 3 is a partial section, at the dotted line 3 3 in Fig'. l, of the machinewith its drag and core-box. Fig. t is a section at the dotted line 4 in Fig'. 3 of parts there shown. Fig. 5 is a section at the dotted line 5 in Fig. 3 of parts there shown. Fig. 6 is a central vertical section of the drag' and core-box of the machine in positions the reverse of those shown in Fig. 3, the drag' being shown supporti n0' and withdrawing a core from its box. Fig. t is a central vertical section of a cope, pattern, and strippingplate of the machine, the pattern being' shown descending out of the cope and below the stripping-plate. Fig. 8 is a section at the dotted line 3 n in Fig. T of parts there shown. Fig. 9 is a central vertical section of a flask made up of the drag and cope shown in Figs. 6 and 7 and containing' a complete mold ready to receive molten metal.

Like letters of reference indicate corresponding parts throughout the several views.

A is the base of the machine and is provided with upwardly-projecting' tongues A, bearing-lugs A2, and two pairs of substantially parallel slots A3, all serving purposes to be explained hereinafter.

B represents vertical standards having grooves B, Fig. 3, in the lower ends thereof to admit the counterpart tongues A on the base A and provided at their upper end portions with shaft-bearings B2 and lug-bearings B".

B3 represents threaded rods mounted in correspondingly-threaded bearings B l in the lugs A2 and inserted through and maintained in bearings B5 in the standards B by means of fast collars B B7 represents cranks for rotating the threaded rods B, wherethrough the standards B may be adjusted toward or from each other any desired distance within the limits of the mechanism` the scales a on the tongues A serving as g'uides for the adjustment of such standards B and the bolts and nuts' B B`J serving as means for securing them to their base A after adjustment.

C, Fig. 3, is a pit located below the central portion of the base A of the machine.

C' is a cylinder vertically seated on a bearing' in the bottom of the pit (l and projecting upward through the base A of the machine.

C2, Figs. 6 and T, is a piston slidably mounted in the cylinder C' and provided at its upper end with a horizontal platen C.

C" represents guide-rods rigidly secured by their upper ends to the platen or platen-support and projecting downward therefrom through openings C in the machine-base A into the pit O.

C" represents springs encircling and resting upon bearings O7 on the guiderods C and serving' as cushions for the platen (.l"g as it approaches its upper limit ol travel.

Cs is an air-pipe tapped into the lower portion of the cylinder (Y. 'lhe platen C may be driven upward by means of compressed air admitted into the cylinder C' through the pipe C, the operation of gravity normally sustaining it in the position shown in Fig. 3. The cylinder C exhausts through a valve therein. (Not shown.)

D represents tracks, preferably fast to the standards B, supported by means of feet 1.)' and extending from the machine to the casting-floor of the foundry.

E is a laterally-extensible skeleton truck provided with rollers E for its support and propulsion on the tracks l). The truck may be rendered laterally extensible by employing cooperating slidably-connccted members Il if".

The bearings B2, Fig. A, in the upper ends of the standards B are provided with caps IOO hinge-jointed thereto by means of lugs and pintles 722. The bearings B2 and caps 7) are also recessed at b3 to admit a bolt b5, which is pivoted by its lower end to the part B2 by means of a pintle b2. Whenever it is desired to uncover the bearing B2, the nut b2 should be loosened and the bolt Z22 be swung out of the recess b3 in the cap 7).

F is a core-box provided with transverse opposite trunnions F', whereby to rotatably mount the same in the bearings B2 in the standards B. The core-box F may be of any practicable form and vof any desired dimensions within the limits of the machine, its supporting-standards B being adjustable laterally and provided with bearings B2, adapted to admit trunnions of any core-box when they are of uniform diameter.

F2, Fig. l, is a crank for turning the corebox B in its bearings B2.

G is a drag adapted to be used in conjunction with the core-box F to form and support the male portion of a mold. The drag G may be of any practicable form and size usable with a core-box of the class represented by the above-described core-box F.

H, Figs. 7 and 8, is a pattern of any practicable form usable in connection with the hereinhefore-described devices.

I is a stripping-plate usable with any practicable form of a mold. Pins I' may be inserted through openings I2 in the standards B into sockets Is in the stripping-plate I to secure the same onto its supporting-lugs B on the standards B.

J is a cope of any practicable form usable in connection with the stripping-plate I and drag G. rIhe cope J is provided with transverse opposite lugs J', whereby to connect lifting mechanism therewith.

K represents clamps provided with thumbscrews K' for temporarily securing the dragboard K2, drag G, and box F together.

The operation of the machine to produce a complete mold, like that shown in Fig. 9, for instance. will be as follows: The core-box F and d'rag G, being in the relations and positions shown in Fig. 3, are lirst rammed full of sand, which is then struck oft' even with the free end of the drag, and a drag-board K2 is placed and secured thereon by means of the clamps K. The positions of the core-box and drag are then reversed. Compressed air is next admitted to the cylinder C' and therethrough elevates the platen C2 until vit contacts the drag-board K2. The clamps K are next removed, and the compressed air being shut off from the pipe Cs gravity and the weight of the drag G and core X, Fig. 6, will cause the platen C3 to descend to the positionV shown in Fig. 3, the platen depositing the drag G, with the core X, on the truck E, Fig. 6, as it passes downward therethrough. The

' above.

truck E is then pushed along the tracks D any desired distance, and the drag G, with the core X, is then lifted therefrom and deposited on the casting-Hoor, as at Fig. 9. Obviously any desired number of cores X may be formed in drags G and transferred from the machine to the casting-floor in the manner described The core-box F is detached from its bearings B2 when the desired number of cores X have been made, and a stripping-plate I, Fig. 7, is then mounted and secured on the bearings Ba on the standards B. The pattern H is next placed on the platen C3, and the latter is elevated, in the manner already described, to the position indicated by dotted lines in Fig. 7. The cope J is then placed in position on the stripping-plate I and is thereafter rammed full of sand around the pattern H. The platen C3 is then caused to descend, and thereby withdraw the pattern H from the female portion X' of the mold. The cope J is next conveyed to the castingfloor and placed in position upon the drag G, Fig. 9. Theoperation just described is continued with additional copes until they correspond in number with their drags.

Having fully described my invention, what I claim as new, and desire to secure by Letters Y Patent, is-

1. In combination, a main supporting-base, a pair of vertical standards laterally adjustable thereon, a core-box rotatably mounted in bearings in the standards, a drag adapted to be used in connection with the core-box, -a laterally-adjustable track located below the core-box and drag, a laterally-extensible skeleton truck mounted on the track, a platen arranged to travel upward and downward, through the truck, to receive the drag with its core and deposit them thereon, and means for operating such platen, substantially as described.

2. In combination, a main supporting-base A, a pair of vertical standards B laterally adjustable thereon, a core box F rotatably mounted, by means of opposite trunnions F', in bearings B2 thereon, a drag G adapted to be used in connection with the core-box F, a laterallyadjustable track D located below said core-box and drag, a laterally-extensible skeleton truck mounted on the track D, a platen C3 arranged to travel upward and downward, through said truck, to receive said drag G with its core and deposit the same on said truck E, and means for operating said platen C3 substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

i STANTON GRIFFITH. Witnesses:

L. L. MORRISON,

MARY L. MORRISON.

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